api_key = APIKeyQuery(name="key", auto_error=False)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: Optional[str] = Security(api_key)):
    if oauth_header is None:
        return None
    user = User(username=oauth_header)
    return user


@app.get("/users/me")
def read_current_user(current_user: Optional[User] = Depends(get_current_user)):
    if current_user is None:

app = FastAPI()

security = HTTPBasic(realm="simple")


@app.get("/users/me")
def read_current_user(credentials: HTTPBasicCredentials = Security(security)):
    return {"username": credentials.username, "password": credentials.password}


client = TestClient(app)


def test_security_http_basic():
    response = client.get("/users/me", auth=("john", "secret"))
    assert response.status_code == 200, response.text

    response = client.get(
        "/users/me", headers={"Authorization": f"Bearer {access_token}"}
    )
    assert response.status_code == 400, response.text
    assert response.json() == {"detail": "Inactive user"}


@needs_py310
def test_read_items(client: TestClient):
    access_token = get_access_token(scope="me items", client=client)
    response = client.get(

    response = client.get(
        "/users/me", headers={"Authorization": f"Bearer {access_token}"}
    )
    assert response.status_code == 400, response.text
    assert response.json() == {"detail": "Inactive user"}


@needs_py39
def test_read_items(client: TestClient):
    access_token = get_access_token(scope="me items", client=client)
    response = client.get(

app = FastAPI()

security = HTTPBase(scheme="Other")


@app.get("/users/me")
def read_current_user(credentials: HTTPAuthorizationCredentials = Security(security)):
    return {"scheme": credentials.scheme, "credentials": credentials.credentials}


client = TestClient(app)


def test_security_http_base():
    response = client.get("/users/me", headers={"Authorization": "Other foobar"})

```


### Die `APIRouter` für `users` und `items` inkludieren

Inkludieren wir nun die `router` aus diesen Submodulen `users` und `items`:

```Python hl_lines="10-11" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

/// info

`users.router` enthält den `APIRouter` in der Datei `app/routers/users.py`.

                                }
                            },
                        },
                    },
                }
            },
            "/users/": {
                "get": {
                    "summary": "Read Users",
                    "operationId": "read_users_users__get",
                    "parameters": [
                        {
                            "required": True,

client = TestClient(app)


def test_security_http_digest():
    response = client.get("/users/me", headers={"Authorization": "Digest foobar"})
    assert response.status_code == 200, response.text
    assert response.json() == {"scheme": "Digest", "credentials": "foobar"}


def test_security_http_digest_no_credentials():
    response = client.get("/users/me")
    assert response.status_code == 200, response.text

client = TestClient(app)


def test_security_http_bearer():
    response = client.get("/users/me", headers={"Authorization": "Bearer foobar"})
    assert response.status_code == 200, response.text
    assert response.json() == {"scheme": "Bearer", "credentials": "foobar"}


def test_security_http_bearer_no_credentials():
    response = client.get("/users/me")
    assert response.status_code == 200, response.text

client = TestClient(app)


def test_security_http_basic():
    response = client.get("/users/me", auth=("john", "secret"))
    assert response.status_code == 200, response.text
    assert response.json() == {"username": "john", "password": "secret"}


def test_security_http_basic_no_credentials():
    response = client.get("/users/me")
    assert response.json() == {"detail": "Not authenticated"}